Chapter 2 - Domestication

Question 1

The development of modern animals occurred over what three stages?

Answer 1

• Evolution
• Domestication
• Production

Question 2

Cambrian Explosion

Answer 2

References the number of divers animal fossils identified from this period to date, the complex body systems of animals originated

Question 3

Triassic Period

Answer 3

Mammals first appeared

250 million years ago

Question 4

Jurassic Period

Answer 4

Birds first appeared

150 million years ago

Question 5

Tertiary Period

Answer 5

Homo genius appeared
65 million years ago
“Period of mammals and birds”
Land bridges appeared

Question 6

Evolution

Answer 6

The process by which changes occur over successive generations

• longest stage
• origin of animals

Question 7

The basic principles of evolution state animals will evolve as they inherently-

Answer 7

• Possess the ability to vary
• Reproduce in excess
• Exposed to a continually changing environment

Question 8

Natural selection

Answer 8

A gradual process where small modifications that occur over time can ultimately lead to significant changes within an animal population

Does not introduce variation into an organism, but works on existing variations that occur as a consequence of genetic changes

Question 9

Adaptations

Answer 9

Modifications that are maintained through natural selection

Question 10

Domestication

Answer 10

The process by which striking variation arises and contributes to contrasting appearances within a species
Man controls the breeding, feeding, and care of animals
- social environment is the primary force

Question 11

Markers of domestication

Answer 11

Floppy ears, curled tails, white head spotting, and unique coat color patterns collectively shared across animals

Question 12

Fundamental Principles of Evolution

Answer 12

• variation of genetics and morphology
• species can be selected for in the creation of new variations
• all species reproduce under food availability and suitable habitat
• species success is dependent on optimum conditions

Question 13

Successful traits for domestication

Answer 13

• social group with hierarchal structure
• promiscuous mating with posturing/signs of mating readiness
• adaptability to large range of diets and environments with minimal stress
• precocial young
• low reactivity to humans

Question 14

Flight distance

Answer 14

The distance from an individual that causes the animals to flee and is commonly referred to as the animal’s flight zone

Question 15

Mechanisms of Evolutionary change

Answer 15

• genetic modification through mutation and migration or gene flow
• natural selection
• genetic drift

Question 16

Taming

Answer 16

A condition behavioral modification

- acceptance of humans is temporary

Question 17

Feral

Answer 17

Once domesticated but returned to wild state